Publication Date

1993

Description

A grazing experiment was conducted at the Estacao Experimental Agronomica - UFRGS, Eldorado do Sul, RS, from June 1989 to March 1990, to evaluate a mixed pasture of pangola grass (Digitaria eriantha), ryegrass (Lolium multiflorum) and white clover (Trifolium repens) under 4 levels of grazing pressure (GP), namely: 3.S, 7 ,0, 10.5 and 14.0 kg DM of forage on offer /100 kg live weight (LW), with 2 field replications. Average live-weight gain (LWG) decreased as grazing pressure increased. Maximum LWG was obtained at grazing pressures of approximately 12%, which was associated with DM residues of 2100 kg and 2900 kg DM/ha during spring and summer respectively. The/ha maximum LWG was 1160 kg, obtained at a grazing pressure of 10.5% for the 289 days of grazing, Grazing pressure did not affect botanical composition, crude protein or in vitro organic matter digestibility of the forage.

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Animal Production and Dynamics of Pangola Grass, Ryegrass, and White Clover as Influenced by Grazing Pressure

A grazing experiment was conducted at the Estacao Experimental Agronomica - UFRGS, Eldorado do Sul, RS, from June 1989 to March 1990, to evaluate a mixed pasture of pangola grass (Digitaria eriantha), ryegrass (Lolium multiflorum) and white clover (Trifolium repens) under 4 levels of grazing pressure (GP), namely: 3.S, 7 ,0, 10.5 and 14.0 kg DM of forage on offer /100 kg live weight (LW), with 2 field replications. Average live-weight gain (LWG) decreased as grazing pressure increased. Maximum LWG was obtained at grazing pressures of approximately 12%, which was associated with DM residues of 2100 kg and 2900 kg DM/ha during spring and summer respectively. The/ha maximum LWG was 1160 kg, obtained at a grazing pressure of 10.5% for the 289 days of grazing, Grazing pressure did not affect botanical composition, crude protein or in vitro organic matter digestibility of the forage.